| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.iotdb.db.pipe.processor.downsampling.sdt; |
| |
| import org.apache.iotdb.commons.pipe.config.constant.PipeProcessorConstant; |
| import org.apache.iotdb.db.pipe.event.common.row.PipeRemarkableRow; |
| import org.apache.iotdb.db.pipe.event.common.row.PipeRow; |
| import org.apache.iotdb.db.pipe.processor.downsampling.DownSamplingProcessor; |
| import org.apache.iotdb.db.pipe.processor.downsampling.PartialPathLastObjectCache; |
| import org.apache.iotdb.pipe.api.access.Row; |
| import org.apache.iotdb.pipe.api.collector.RowCollector; |
| import org.apache.iotdb.pipe.api.customizer.configuration.PipeProcessorRuntimeConfiguration; |
| import org.apache.iotdb.pipe.api.customizer.parameter.PipeParameterValidator; |
| import org.apache.iotdb.pipe.api.customizer.parameter.PipeParameters; |
| import org.apache.iotdb.tsfile.common.constant.TsFileConstant; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| public class SwingingDoorTrendingSamplingProcessor extends DownSamplingProcessor { |
| |
| private static final Logger LOGGER = |
| LoggerFactory.getLogger(SwingingDoorTrendingSamplingProcessor.class); |
| |
| /** |
| * The maximum absolute difference the user set if the data's value is within |
| * compressionDeviation, it will be compressed and discarded after compression, it will only store |
| * out of range (time, data) to form the trend |
| */ |
| private double compressionDeviation; |
| |
| /** |
| * The minimum time distance between two stored data points if current point time to the last |
| * stored point time distance <= compressionMinTimeInterval, current point will NOT be stored |
| * regardless of compression deviation |
| */ |
| private long compressionMinTimeInterval; |
| |
| /** |
| * The maximum time distance between two stored data points if current point time to the last |
| * stored point time distance >= compressionMaxTimeInterval, current point will be stored |
| * regardless of compression deviation |
| */ |
| private long compressionMaxTimeInterval; |
| |
| private PartialPathLastObjectCache<SwingingDoorTrendingFilter<?>> pathLastObjectCache; |
| |
| @Override |
| public void validate(PipeParameterValidator validator) throws Exception { |
| super.validate(validator); |
| |
| final PipeParameters parameters = validator.getParameters(); |
| compressionDeviation = |
| parameters.getDoubleOrDefault( |
| PipeProcessorConstant.PROCESSOR_SDT_COMPRESSION_DEVIATION_KEY, |
| PipeProcessorConstant.PROCESSOR_SDT_COMPRESSION_DEVIATION_DEFAULT_VALUE); |
| compressionMinTimeInterval = |
| parameters.getLongOrDefault( |
| PipeProcessorConstant.PROCESSOR_SDT_MIN_TIME_INTERVAL_KEY, |
| PipeProcessorConstant.PROCESSOR_SDT_MIN_TIME_INTERVAL_DEFAULT_VALUE); |
| compressionMaxTimeInterval = |
| parameters.getLongOrDefault( |
| PipeProcessorConstant.PROCESSOR_SDT_MAX_TIME_INTERVAL_KEY, |
| PipeProcessorConstant.PROCESSOR_SDT_MAX_TIME_INTERVAL_DEFAULT_VALUE); |
| |
| validator |
| .validate( |
| compressionDeviation -> (Double) compressionDeviation >= 0, |
| String.format( |
| "%s must be >= 0, but got %s", |
| PipeProcessorConstant.PROCESSOR_SDT_COMPRESSION_DEVIATION_KEY, |
| compressionDeviation), |
| compressionDeviation) |
| .validate( |
| compressionMinTimeInterval -> (Long) compressionMinTimeInterval >= 0, |
| String.format( |
| "%s must be >= 0, but got %s", |
| PipeProcessorConstant.PROCESSOR_SDT_MIN_TIME_INTERVAL_KEY, |
| compressionMinTimeInterval), |
| compressionMinTimeInterval) |
| .validate( |
| compressionMaxTimeInterval -> (Long) compressionMaxTimeInterval >= 0, |
| String.format( |
| "%s must be >= 0, but got %s", |
| PipeProcessorConstant.PROCESSOR_SDT_MAX_TIME_INTERVAL_KEY, |
| compressionMaxTimeInterval), |
| compressionMaxTimeInterval) |
| .validate( |
| minMaxPair -> (Long) minMaxPair[0] <= (Long) minMaxPair[1], |
| String.format( |
| "%s must be <= %s, but got %s and %s", |
| PipeProcessorConstant.PROCESSOR_SDT_MIN_TIME_INTERVAL_KEY, |
| PipeProcessorConstant.PROCESSOR_SDT_MAX_TIME_INTERVAL_KEY, |
| compressionMinTimeInterval, |
| compressionMaxTimeInterval), |
| compressionMinTimeInterval, |
| compressionMaxTimeInterval); |
| } |
| |
| @Override |
| public void customize( |
| PipeParameters parameters, PipeProcessorRuntimeConfiguration configuration) { |
| super.customize(parameters, configuration); |
| |
| LOGGER.info( |
| "SwingingDoorTrendingSamplingProcessor in {} is initialized with {}: {}, {}: {}, {}: {}.", |
| dataBaseNameWithPathSeparator, |
| PipeProcessorConstant.PROCESSOR_SDT_COMPRESSION_DEVIATION_KEY, |
| compressionDeviation, |
| PipeProcessorConstant.PROCESSOR_SDT_MIN_TIME_INTERVAL_KEY, |
| compressionMinTimeInterval, |
| PipeProcessorConstant.PROCESSOR_SDT_MAX_TIME_INTERVAL_KEY, |
| compressionMaxTimeInterval); |
| } |
| |
| @Override |
| protected PartialPathLastObjectCache<?> initPathLastObjectCache(long memoryLimitInBytes) { |
| pathLastObjectCache = |
| new PartialPathLastObjectCache<SwingingDoorTrendingFilter<?>>(memoryLimitInBytes) { |
| @Override |
| protected long calculateMemoryUsage(SwingingDoorTrendingFilter<?> object) { |
| return 64; // Long.BYTES * 8 |
| } |
| }; |
| return pathLastObjectCache; |
| } |
| |
| @Override |
| protected void processRow( |
| Row row, |
| RowCollector rowCollector, |
| String deviceSuffix, |
| AtomicReference<Exception> exception) { |
| final PipeRemarkableRow remarkableRow = new PipeRemarkableRow((PipeRow) row); |
| |
| boolean hasNonNullMeasurements = false; |
| for (int i = 0, size = row.size(); i < size; i++) { |
| if (row.isNull(i)) { |
| continue; |
| } |
| |
| final String timeSeriesSuffix = |
| deviceSuffix + TsFileConstant.PATH_SEPARATOR + row.getColumnName(i); |
| final SwingingDoorTrendingFilter filter = |
| pathLastObjectCache.getPartialPathLastObject(timeSeriesSuffix); |
| |
| if (filter != null) { |
| if (filter.filter(row.getTime(), row.getObject(i))) { |
| hasNonNullMeasurements = true; |
| } else { |
| remarkableRow.markNull(i); |
| } |
| } else { |
| hasNonNullMeasurements = true; |
| pathLastObjectCache.setPartialPathLastObject( |
| timeSeriesSuffix, |
| new SwingingDoorTrendingFilter<>(this, row.getTime(), row.getObject(i))); |
| } |
| } |
| |
| if (hasNonNullMeasurements) { |
| try { |
| rowCollector.collectRow(remarkableRow); |
| } catch (IOException e) { |
| exception.set(e); |
| } |
| } |
| } |
| |
| double getCompressionDeviation() { |
| return compressionDeviation; |
| } |
| |
| long getCompressionMinTimeInterval() { |
| return compressionMinTimeInterval; |
| } |
| |
| long getCompressionMaxTimeInterval() { |
| return compressionMaxTimeInterval; |
| } |
| } |